com.neurosys.etl.common.transformers

Class AbstractTupleToEntityTransformer<TUPLE,CELL,ENTITY>

java.lang.Object

com.neurosys.etl.process.EventAwareProcess

com.neurosys.etl.common.transformers.AbstractEntityTransformer<TUPLE,CELL,ENTITY>

com.neurosys.etl.common.transformers.AbstractTupleToEntityTransformer<TUPLE,CELL,ENTITY>

All Implemented Interfaces:

IdempotentAware, ModeAware, Process, Serializable, org.apache.commons.collections.Transformer

Direct Known Subclasses:

AbstractExcelRowToEntityTransformer, ObjectArrayToEntityTransformer

public abstract class AbstractTupleToEntityTransformer<TUPLE,CELL,ENTITY>
extends AbstractEntityTransformer<TUPLE,CELL,ENTITY>

Converts a Tuple (abstract tuple as a concept) to an Entity

Author:

Arjun Dhar

See Also:

transform(Object), Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.neurosys.etl.process.Process

Process.Event, Process.EventPoint

Field Summary

Fields inherited from class com.neurosys.etl.common.transformers.AbstractEntityTransformer

columnFieldMapping, idempotent, mode, modesSupported, nestedObjectInitMap, nonAssociatedMappers

Fields inherited from class com.neurosys.etl.process.EventAwareProcess

listeners, processState

Constructor Summary

Constructors

Constructor and Description
AbstractTupleToEntityTransformer()
AbstractTupleToEntityTransformer(AbstractTupleToEntityTransformer t)

Method Summary

Modifier and Type	Method and Description
protected abstract int	getColumnIndex(CELL col)
protected abstract Iterator<CELL>	getColumns(TUPLE row)
protected abstract TUPLE	getTuple(Object rawTupleInput)
protected abstract int	getTupleIndex(TUPLE row)
protected abstract int	getTupleIndexFromCol(CELL col)
protected abstract Object	getValue(CELL col, Mapper mapper)
protected String	identifyNode(CELL cell) Identify a node/cell that is being processed.
Object	transform(Object input) Work Horse method that does all the conversion using Mappers.

Methods inherited from class com.neurosys.etl.common.transformers.AbstractEntityTransformer

consumeIntermediateObjects, getColumnFieldMapping, getEntityAccessTransformer, getMode, getModesSupported, getNestedObjectInitMap, getNonAssiciatedMappers, getNonAssociatedMappers, getValue, init, init, isIdempotent, nestedInit, processValue, setColumnFieldMapping, setEntity, setEntityAccessTransformer, setIdempotent, setMode, setModesSupported, setNestedObjectInitMap, setNonAssociatedMappers

Methods inherited from class com.neurosys.etl.process.EventAwareProcess

addListener, getListeners, onChangeHandler, setListeners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractTupleToEntityTransformer

public AbstractTupleToEntityTransformer()

AbstractTupleToEntityTransformer

public AbstractTupleToEntityTransformer(AbstractTupleToEntityTransformer t)

Method Detail

getTupleIndex

protected abstract int getTupleIndex(TUPLE row)

getTupleIndexFromCol

protected abstract int getTupleIndexFromCol(CELL col)

getColumnIndex

protected abstract int getColumnIndex(CELL col)

getTuple

protected abstract TUPLE getTuple(Object rawTupleInput)

getColumns

protected abstract Iterator<CELL> getColumns(TUPLE row)

getValue

protected abstract Object getValue(CELL col,
                                   Mapper mapper)
                            throws Exception

Parameters:

col - as CELL

mapper - as Mapper @nullable true

Returns:

Throws:

Exception

identifyNode

protected String identifyNode(CELL cell)

Description copied from class: AbstractEntityTransformer

Identify a node/cell that is being processed. Used for Log and debug purposes.

Specified by:

identifyNode in class AbstractEntityTransformer<TUPLE,CELL,ENTITY>

Returns:

String

transform

public Object transform(Object input)

Work Horse method that does all the conversion using Mappers.
Mapping involved One-to-One mapping or mapping Hypothetical variables in the source to real ones in persistence.